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南门一

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半人馬座ε
觀測資料
曆元 J2000
星座 半人馬座
星官 南門 (角宿)
赤經 13h39m53.2s
赤緯 −53°27′59″
視星等(V) +2.29
特性
光谱分类B1III
U−B 色指数−0.92
B−V 色指数−0.22
变星类型仙王β型变星
天体测定
徑向速度 (Rv)+3 km/s
自行 (μ) 赤经:−14.60 mas/yr
赤纬:−12.79 mas/yr
视差 (π)8.68 ± 0.77 mas
距离380 ± 30 ly
(120 ± 10 pc)
绝对星等 (MV)−3.02
其他命名
Al Birdhaun, HR 5132, CP−52°6655, HD 118716, SAO 241047, FK5 504, HIP 66657, GC 18458, CCDM J13399-5328
參考資料庫
SIMBAD资料

南门一ε Cen / 半人馬座ε)是一顆位于半人馬座恆星,英文俗名Al birdhaunBirdun

南门一是一顆藍白色的B型巨星,其視星等為+2.29。它被歸為仙王β型變星,而其光度會在+2.29和+2.31之間變動,周期為4.07小時。

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南门一
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